Rolf Peterson has been studying wolves and their prey for over a half-century, especially in Isle Royale National Park where protected populations of wolves and moose interact. His Ph.D. from Purdue University involved his initial work in this area, and he has used similar approaches for wolf-related studies in Alaska and Yellowstone National Park. At Michigan Technological University he has been on the faculty in Biological Sciences as well as in the School of Forest Resources and Environmental Science (CFRES). Since retiring from his regular faculty position, he has continued doing predator-prey research as a Research Professor in CFRES. He has over 150 peer-reviewed publications from his research. He was a founding member of the Wolf-Moose Foundation, dedicated to improving the future for predators and ensuring the future for the Wolf-Moose Project at Isle Royale. He has two grown sons and together with his wife Carolyn, he lives in Houghton, Michigan.